Traffic marker



1929- R. J. MCKEE ET AL 1,736,830

TRAFFI C MARKER Filed Aug. 27, 1927 iv feet of pedestrians and horses from Patented Nov-26,1929

UNITED STATES. PATENT OFFICE aura .1. E0133 um r. scnmm, or cnrcneo, nmmors, ASSIGNORS 'ro CHICAGO mUILGT'UB-ING & CORPORATION 01' ILLINOIS nIs-rmu-rme comm, or cnrcaeo, rumors, A

ammo

a licant am August :1, 1927. Serial in. 215,920.

This invention relates to street or road markers, or traflic guide buttons or markers. One of the objects of the invention is the provision of a street marker that is pro- 6 vided with new and improved means for attaching the same to the streetsurface.

Another object of the invention is the provision of new and improved tread means on the surface of the marker for preventing the slipping when the marker is stepped on.

A further object. of the invention is the provision of a new and improved marker, the exposed portion of which, when in position in the street, will be reinforced from beneath, and that will be water and frost proof.

Another object of the invention is the pro-; vision of a new and improved street markerthat is cheap to manufacture, easily assembled and applie to the street surface, that is heat in appearance, eflicient in use, and that is not likely to become loose, broken, or get out of order.

@ther and further objects and advantages of the invention will appear from the following description taken in connection with the accompanying drawings, in which:

Fig. 1 is a plan view of the cap member of the marker;

Fig. 2 is a vertical section of the marker and a portion of the highway showing the marker in position therein;

Fig. 3 is a vertical section of a modified form of the device;

Fig. 4 is a vertical section of a modified form of cap;

Fig. 5 is a vertical section of a modified form of cap showing the attaching member secured therein; and

Fig. 6 is a plan view of a further modified form of the device.

Referrin now to the drawings, in which similar re erence-characters designate the same parts throughout the description, the

numeral 10 designates a highway, such as a street or road. The present invention is adapted to be secured in the highway to indicate. traflic lines and the like, as is usual the use of such devices. In marker devices it is necessary that the caps or parts that are exposed be of such shape, form and quality of material that they will be conspicuous and will not become obscured by the dirt or refuse of the street. It is also necessary that the visible portion or cap of tion of the mar (er. Thisis preferably circular, although it is understood that it may be otherwise. In order I that the marker shall stand sufficiently high above the plane of the highway to be pla nly visible the cap 11 is cup-shaped or convex on its upper side. The peripheral edge of the cap 11 is provided with downwardly extending flanges 12 for engaging a groove in-the pavement, as will presently appear.

As heretofore constructed, street markers are convex on their upper side, and for this reason pedestrians often slip and fall when stepping thereon. In order to avoid this difliculty the cap 11 is provided with up wardly extending bosses 13, the tops of which are substantially in a horizontal plane, whereby there will be no tendency to slip ofi the marker when a edestrian steps thereon. In order to provide anti-slipping devices the bosses 13 may have holes 14 drilled or punched therein. The sharp edges 15 about the marginal outer ends of these holes will form means for preventing the under side of the cap which may epressed about the opening 1 as shown at/19 in Fig. 2. The lgper end of the attaching inember 16 is swag or .upset so as tocompletely fill the recess 21 formed by the depression 19, whereby a water-tight joint is formed between the attaching member 16 and thecap 11.

The lower end of the attabhing member 16 Y may, if desired, be provided with an anchoring device. As shown, the member 16at its lower end is enlarged td form the annular shoulder 22 and the convex surface 23.

In attaching the marker to the pavement of the highway thehol e 24 is drilled for the reception of the attaching member 16. A oove 26 is formed concentric with said hole or receivin the flange 12. The hole 24 is then filled w1th asphalt, concrete, or the like, 25,. in a plastic state. The attaching member 16 is then driven into the hole and the displaced plastic material will fill the cupshaped space between the cap and the pavement, and the surplus will be extruded through the openings 15. The devices force annular groove 26.

After the plastic material 25 has become set or hardened, the portion directly beneath the cap 11 will constitute a reinforcement for assisting in supporting said cap, and since it fills the entire space beneath the cap, it will render the entire installation water-proof.

, The opening 24 and the groove 26 may be made deeper than the length of the attaching member 16 and .the flange 12, respectively, especially if the opening 24 is to be filled with asphalt so as to rmit a further depression of the marker due to its constant use. Where the surface of the; street is asphalt, it may not be necessary to provide a groove 26, since the flange 12 may be forced down into the surface y pressure.

The form of the device shown in Fig. 3 diflers from that shown in Fig. 2 in that the attaching member 27 is rigidly attached to the cap 28. In this form of the device the cap 28 is provided with projections which may be in the form of rivets 29 that may or ,may not have the openings corresponding to the o enings 15 in the cap 11.

The orm of the device shown in Fig. 4 differs from that shown in Figs. 1 and 2 in that the attaching member is dispensed with. In this construction the. cap 31 is-provided with the upwardly extending projections or bosses 32 and these bosses, as in the form shown in Fi 1, are provided with o enings 33 through t e highest points thereo so that the edges of the openings will constitute antislipping means. flange 34 may be considerably extended over the construction shown in Fig. 1. The flange 34 may be driven into the sur ace of the street down until the flange 12 seats in the In this construction the- .or 1pa veinenfi'if the-surfacing material is p alt or wooden blocks or the like. If the surface of thepa'vement is concrete a groove is provided for the reception of-the flan e 34 and in applying the device the, cap is filled with suita le materialin plastic state, such as asphalt, mixture of asphalt and sand, or concrete or the like, and the cap is forced into position, causing'the material to extrude.

- end of the attaching member 35 is .upsetas at 37, forming the shoulder 38 against which the lower downturned edge 39 of the open-- ing 41 in the cap 36 is adapted to abut. The

upper. end of the member 35 is then upset-or swa'ged to make a water-tight joint and holdthe 'arts in assembled relation.

T e form shown in Fig. 6 diflersfrom that shown in Fig. 1-in that the projections 48 on the cap 49 are of angular form. These projections may, if desired, be provided with openings corresponding to the openings 15 in the'projections 13 for constituting antislippin'g devices. The attaching member may have its head 42 provided with studs .01: projections, 43 for constituting anti-sl'ipping devices.

It is understood vthat in all these forms the cap is to be made from rust-proof material, and preferably from material that will reflect the light sufficiently to be distinctive. The caps may be made from monel or any other bright, rust-proofmetal.

While the cap members may be provided with the projections 13 without having the openings 15, it is preferred that these openings be employed as they will constitute vents through which the filler material for the holes 24. such as tar, asphalt, concrete and the like, may escape when the device is driven or pressed into position in the pavement.

Each of the projections 13 constitutes a reflecting surface for reflecting the light, and

consequently each cap will reflect a great amount of light, while atthe same time the reflected light will be more or less broken up or diffused, whereby the composite reflection will not be objectionable to the observer.

It is thought from the foregoing taken in connection with the accompanying drawings that the construction and operation of my devicewill be apparent'to those skilled in the art, and that various changes in size, shape, proportion and details of construction may be made without departing from the spirit and scope of the appended claims.

We claim as our invention:

1. A traflic marker comprising a circular cap member curved on itsupper surface and having its peripheral .edge turned vertically downward for engaging a circular groove in the pavement, and a pllurality of circular projectlons convex on t eir upper surfaces and provided with openings therethrough arranged in a circle about the vertical axis of 5 said cap, the upper surfaces of said projections forming a horizontal tread.

2. A traflic marker comprising a cap memher having an upper dome-shaped surface and .provided with upwardly extending projections on said surface for forming a horizontal tread on said marker, and an attaching member rigidly secured to said cap member axially thereof.

3. A traflic marker comprising a cap memher having an upper dome-shaped surface and a comparatively. narrow depending peripheral flange adapted to engage in a groove in the surface of the highway, and a plurality of upwardly extending projections on said dome, the upper surfaces of said projections forming a horizontal tread over the upper surface of said dome.

4. A traflic marker comprising a cap member having a dome-shaped surface, a plurality of pro ections extending upwardly, from said surface, the u per surface of said projections Being in a p ane at a right angle to the axis of said dome-shaped surface and depending means for securing said marker in operative position in the surface of a high- Wag;

testimony whereof we ailix our signatures.

RALPH J. MoKEE. as WILLIAM F. SGHEFFLER. 

